151 to 175 of 186 Senior Systems Engineer Jobs in London

Octopus is seeking a seasoned backend engineer to embed with cross-functional teams and co-build high-impact AI features inside domain codebases. You will design internal developer tools and templates in Python to streamline how teams across … Octopus safely integrate AI into their software. You will establish guardrails, collaborate with Data, and mentor local teams, turning quick prototypes into secure, scalable systems while maintaining a pragmatic, fast-shipping mindset. #J-18808-Ljbffr ...

Schneider Electric is seeking a Specialist Senior Service Representative in the United Kingdom to diagnose complex issues, lead maintenance projects, and deliver technical consulting for customer success. You will guide field service engineers, coordinate across teams, and help optimize performance while ensuring safety and compliance. This UK-based ...

Eaton's Aerospace division in Wimborne, UK, seeks a Test and Development Engineer to lead verification activities and deliver new aerospace products and processes. You will contribute within an IPT, apply rigorous testing and documentation, and drive team capability in verification and analysis. Role requires experience in regulated ...

Model ML is seeking an experienced software engineer to own large portions of our AI agent infrastructure and to deploy multi-agent systems and RAG pipelines at production scale. You will build backend services and APIs, ensure security and performance, and contribute across the stack from frontend ...

Callosum Technologies Ltd. is hiring for a role focused on building the communication systems that enable heterogeneous accelerators to operate as a single system. You will work across protocols, memory movement, networking hardware, and software layers to move data directly and efficiently across vendor boundaries. The role demands deep ...

Income Derivatives Technology group. Our team works closely with Interest Rates Sales & Trading and Quantitative Strategists team to develop next generation risk and trading systems to achieve their business goals. A successful candidate would work on one of the world's largest Scala projects and gain exposure to every … Communicate regularly with product leads across the technology organization and discuss opportunities for improvement to existing and future technology solutions. Develop large-scale distributed systems to compute and report intra-day and eod-of-day risks, PnL (Profit and Loss) and market scenarios to senior management, trading ...

Kinsworth is seeking exceptional AI engineers to help build and scale its AI-native financial intelligence platform. You will lead production AI/ML capabilities, combining language models with structured data and specialist models to ...

London is seeking an experienced Python Software Engineer to join our product engineering team. You will help build and evolve the backend systems powering our wealth platform, designing secure, scalable APIs and internal tools using Python, FastAPI, SQLAlchemy, and related technologies. Collaborate with cross-functional teams ...

Anduril Industries seeks a Staff Product Security engineer to build security tooling, identify vulnerabilities, and safeguard … command and control, aerospace, and sensing technologies. You will review architectures, perform threat modelling, and collaborate with teams to fortify firmware, software, and embedded systems, while ensuring compliance and security documentation is thorough and up-to-date. #J-18808-Ljbffr ...

Senior Java Developer to deliver low-latency trading system components. The ideal candidate will have expertise in Java and experience with distributed systems, cloud environments like AWS, and trading flows. This role emphasizes collaboration across global teams and innovation in financial markets, offering a dynamic career within ...

SeedLegals Limited is seeking senior backend developers to mentor junior engineers, shape architecture, and contribute to a growing codebase. You will work in a scrum team of 6-8 engineers, a UX designer, and a Product Manager, driving innovations such as AI-enabled features and document/workflow ...

Expedia Group is seeking a Software Development Engineer III within the B2B division to design, develop, and deliver scalable software and APIs powering our partner ecosystem. You will mentor junior engineers, lead complex engineering initiatives, and influence the technical direction of our products and systems. You will work ...

Morson Edge (Financial Services) is seeking a Lead Java Engineer to drive low-latency, high-throughput Front Office trading systems for a global Investment Bank. The role sits on the Fixed Income Technology Platform as part of a major replatforming and modernisation programme supporting Emerging Markets & Repos. ...

London Stock Exchange Group (LSEG) is seeking a Senior C++/Java Developer in London. The role focuses on designing, developing, and delivering high-quality software solutions across C++ and Java stacks within a defined product or platform area. You will collaborate with senior engineers, architects ...

Frontier Resourcing is sourcing DV‐cleared Software Developers for a leading defence organisation in the UK. Roles span from junior to Principal, within secure programmes and teams delivering mission critical software. You will contribute across ...

Shield AI in London is seeking a DevSecOps Engineer to design, build, secure, and operate the software delivery infrastructure for autonomous defence systems. You will work at the intersection of software, platform engineering, cyber security, and defence engineering to create secure development environments and delivery pipelines that enable ...

JPMorganChase is seeking an Experienced Software Engineer to join the Global Technology team. You will design and deliver scalable, secure products in an agile environment, potentially working on mobile features, big data in trading, payments, or cloud integrations. The role requires hands-on system design, coding in Java ...

TOMS, improving operational resilience, and leveraging AI tools for better productivity. The successful candidate will need experience in banking technology and Front Office trading systems, particularly in Fixed Income products. This position offers opportunities to enhance project deliveries and contribute to process improvements using modern practices. #J-18808-Ljbffr ...

fast-growing logistics startup in London seeks a Software Engineer to tackle challenging problems and collaborate with experienced professionals. The role involves impactful work from optimizing operational tools to developing scalable applications. This company offers competitive compensation, generous equity, and several benefits, including private health coverage and flexible ...

ICAP Group Services Ltd is seeking a Senior Java Developer based in the City Of London. The role involves designing and implementing low-latency trading system components while collaborating with diverse teams to ensure optimal performance and stability. Candidates should have substantial experience in Java, familiarity with cloud ...

fast-growing logistics company in Greater London is seeking a Software Engineer to tackle complex problems in routing and optimization. The role emphasizes collaboration with a talented team, regular code deployment, and significant impact on e-commerce platforms. Benefits include generous equity, comprehensive health coverage, and a dynamic ...

optimizes for efficiencies and never stops seeking improvements -- even small changes that can make a huge impact. You generate ideas, communicate recommendations to senior-level executives and drive implementation alongside facilities technicians. With your technical expertise, you ensure compliance with codes and standards, develop infrastructure improvements and serve … generation data center designs. You enjoy working across multiple discipline trades (Architectural, Structural, MEP, Telecom/ICT Networking, Controls (BMS/PMS) and Security systems) and you have great time management skills to meet changing project priorities and deadlines across the world. As a Telecom/ICT Lead ...

optimizes for efficiencies and never stops seeking improvements -- even small changes that can make a huge impact. You generate ideas, communicate recommendations to senior-level executives and drive implementation alongside facilities technicians. The passion for technology and understanding how things are put together is a part of everything … generation data center designs. You enjoy working across multiple discipline trades (Architectural, Structural, MEP, Telecom/ICT Networking, Controls (BMS/PMS) and Security systems) and you have great time management skills to meet changing project priorities and deadlines across the world. As a Telecom/ICT Lead ...

DRW is a diversified trading firm with over three decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to pivot quickly ...

institutions build and validate client-ready AI-powered processes. You will own large portions of our AI agent infrastructure, designing and deploying multi-agent systems and RAG pipelines while delivering features at scale. Join a fast-growing fintech platform backed by top investors. You will influence backend services, data ...